15228591040 has 112 divisors (see below), whose sum is σ = 39961218528. Its totient is φ = 5492035584.

The previous prime is 15228591031. The next prime is 15228591043. The reversal of 15228591040 is 4019582251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15228591043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136314 + ... + 221446.

It is an arithmetic number, because the mean of its divisors is an integer number (356796594).

Almost surely, 2^15228591040 is an apocalyptic number.

15228591040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15228591040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19980609264).

15228591040 is an abundant number, since it is smaller than the sum of its proper divisors (24732627488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15228591040 is a wasteful number, since it uses less digits than its factorization.

15228591040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85206 (or 85196 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 15228591040 in words is "fifteen billion, two hundred twenty-eight million, five hundred ninety-one thousand, forty".